What is the correct size I need for the Heater Hose Nipples on the Water Pump for a 70 Chevelle. 1 hose coming from the Heater Core to the Water pump and 1 from the Intake to the Water Pump ... are they 3/4 or 5/8 short?

Can't recall and I wanted to place an order today.

Thanks,

Dave

I believe it as follows:
Upper heater core to water pump= 3/4"
Lower heater core to Manifold= 5/8"
Bypass= Ithink you can use 3/4" or 5/8", just make sure you have the corresponding nipples in the pump/intake